Hammer attachment for rotary mills.



M. F. WILLIAMS.

HAMMER ATTACHMENT FOR ROTARY Mms.

APPLTcATloN rLT-:n 1AN.21. T915.l I 1,147,351. Pmened July 20, 1915.

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llllll Illllii l NIIII Illllll 1 MILTON F. lYVILLIAMS, OF ST. LOUIS, MISSOURI, ASSIGNOR TO WILLIAMS PATENT i CBUSI-IER AND IPULVERIZER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORA- TION OF MISSOURI.

HAMMER ATTACHMENT FOR ROTARY MILLS.

To all whom it may concern:

Be it known that I, MILTON F. WILLIAMS, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Hammer Attachments for Rotary Mills, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference` being had to the accompanying drawings, forming part o f this specification.

My invention relates to rotary hammer mills of a type'commonly employed in crushing'the various'rocks and ores, and characterized by the employment of beaters which are flexibly mounted by means of chains or similar flexible suspension means.

More specifically my invention relates to a form of collar or disk which provides a means of attachment whereby the suspension means of the hammers are operably connected to the driving shaft.

Thebroad object of my invention is to provide a form of mounting which is designed for the purpose of permitting adjustment orresetting of the flexibly mounted hammers so as to compensate for wear at their outer ends.

A further obj ect is to provide such a form of mounting wherein the unslinging andreslinging of the hammers may be accomplished with a minimum amount` of labor and without-necessitating dismantling of the machine.

A further object of my invention is to provide such a form of mounting which is susceptible of arrangement to balance the shaft.

A further object ofmy invention is to provide such a form of mounting which will permit any desired arrangement or alineineiit of the hammers.

A. further object of my invention contemplates the provision of a mounting, which may be manufactured cheaply, which is durable under the hard usage to which such a part is subjected, which is capable of being easily assembled in a machine, and which will give to the rotating or driving element such inertia as will permit a ily wheel being dispensed with.

Other and further objects of my invention will be obvious or hereinafter pointed out.

y Specification of Letters Patent. i I' Patented illy 20 1915. Application filed January 27, 1915. Seriall No. 4,692. Y

In the drawings, Figure 1 represents an illustrative side view of a portion 'of a crusher showing the use of my invention.

Fig. 2 is a vertical section of one of the disks or mounts, the same being taken transversely on line 2-2 of Fig. 1. Fig. 3 is a sectional detail taken on line 33 of Fig. 2 illustratmg one form of securing means.

Referring more specifically to the drawings, it will be understood that dotted lines 1 represent generally a portion of the casing of a cruslier of the class described, and the dotted lines 2 represent generally the location of the cage or grizzly upon which material is supported during the crushing operf ation.

y 11 represents the driving shaft which is operable by any suitable driving means and upon which are mounted the hammer sup ports or disks 5. Hammers 6 having the suspension means 7, here shown as chains, are mounted on the supports 5 as Will be hereinafter pointed out.

As is well known in the art, the material to `be crushed is introduced through a suitable feed aperture in the casing of a machine, and the shaft rapidly rotated to whirl the hammers about, in which opera-tion they function to beat and crush the material, the

grizzly or cage 2 cooperating with them in this action. In this usage the hammers 6 necessarily become worn down at their outer ends so that they do not operate sufficiently lclose to the grizzly to have the maximum efficiency.

The disks or supports 5 are designed to permit the hammers being adjusted to compensate for this wear. As will be understood from Figs. 1 and 2, these disks comprise the side plates 8 which are provided with the central aperture 9` for the passage of the shaft, and formed with the integral connecting hub portion 10.

Radiating from the hub portion I10, and formed integrally therewith andwith the side plates 8, are the mountings 11, 11a and 11b. In each of these mountings is provided a pocket or seat 12 extending radially of the shaft and adapted for the reception of the link or loop at the inner end of the suspension means 7. The length of the mountings 11, 11 and 11b, and the disposal of the seats 12 therein is such that the seats 12 in mountings 11 are radially nearer the shafts. than are the seats in mountings 11a, and the seats in meuntings 11b are radially farther from the shaft than the seats in mountings 11a. The maximum Width of the seats 12 eXtends longitudinally of the shaft, or transversely' of the disk, and the Inountings are provided with the seats 14 for attaching means, which seats are directed transversely of the seats 12, and consequently, transversely of the shaft 4. rlhe seats 14 are adapted for the reception of any suitable securing means, such as rivets, bolts, or keys, Which will afford means of attachment whereby the loops inserted in the seats 12 may be secured and retained in place.

It will be seen that mountings of equal length are disposed diametrically opposite each other so that they will operate to balance. A plurality of the disks or supports are mounted onthe shaft 4 side by side, either with the side plates 8 of adjacent disks spaced apart or abutting. rlhe disks may he positioned on the shaft so as to give the mountings any desired relative arrangement or alinement. As illustrated, the arrangement is such that the adjacent disks are placed With their' corresponding mountm ings at right angles, as will be seen in Fig. 2, in which the dotted lines represent the position of the mountings on the juxtaposed disks, it being noted that the longest mounts 11b on the adjacent disks are disposed at right angles to the longest mounts 11b on the full-line disk, with the otheranountings 11a and 11 on the adjacent disks hearing similar relationship to their corresponding mountings 11a and 11 on the fulldine disk.

With this arrangement the disks will balance each other and the shaft. Any

other selected balancing arrangement may he employed, such as a disposal of the disks in such relationship that mountings of correspending length are disposed spil-ally about the shaft.

.Flach of the individual disks may be se cured to the shaft hy some suitable locking arrangei'nent as that illustrated in Fig. 3, or the end disks may be seciired to the shaft and the intermediate disksinterlockcd therewith and with one another by any suitable interlockingarrangement, wherel'iy to hold all the disks rigidly on the shaft. The locking"arrangement illustrated in Fig. 3 coinprises a gib 15 of mild steel which may be coneavcd to i.iit the shaft and operates'in a suitable keyway in the disk. TWith this eooperates a keyv 1G which,'- whcn driven in place., operates to force the gib l5 into locking,y engagement with. the shaft. A. suitable iaa'assi lock 17 coperates with the key 16 to hold it against displacemento In use, When the hammers are neW and have'their maximum length, they are mounted in the mountings 11, Which are nearest the shaft. Upon becoming' Worn, they may be adjusted by removing the securing means comprising the bolts or rivets 18, and remounted in the next longer mOu-ntings 11a. When still further Worn, the hammers may he dismounted from the mountings l1a and remounted in the mountings 11". This form of Yhammer mounting facilitatesl the remounting of the hammers as the lattaching means 18 are easily accessible. Furthermore, it is not necessary to remove the disks from the shaft when the hammers are remounted.

In operation the disks 5 give the shaft an added inertia.. and when properly balanced, as they readily may loe, render it unnecessary to employ a fly wheel on the shaft.

l am aware that the device is susceptible of changes and modiiications not herein illustrated Without departing from the spirit and scope of my invention, and hence it is not my intention that my invention be construed as limited to the specific form shown.

l/Vhat l claim is:

1. A hammer mounting for rotary mills comprising` a plurality of mounts disposed on an operating shaft, said mounts being provided With a plurality of radially directed seats disposed at different distances .from the shaft, and means for securing a hammer suspension means in said seats.

2. .ln a rotary mill, a shaft, a hammer support mounted thereon, said hammer support having,r a plurality of hammer' mount-V ings projecting radially from said shaft, said mountinggs being provided With seats disposed at different radial distances from said shaft, and securing means disposed transversely of the shaft and adapted te cooperate With said seats to secure hammer suspension means therein.

3. A hammer mounting for a rotary mill comprising a shaft, and a disk member thereon and provided with radially directed seats for lnimmer snspensi on means disposed at different distances from the shaft.

i in testimony whereof l hereunto allix my signature in the presence of two Witnesses.l this 23rd day ot' Taniiiary, 1915.

l M'ILTON F. WlliLlAll'iS.

lV i tnesses lVM. G. WEBER, NORMAN l?. SHEPIARD. 

